frontend_example with PyInstaller about openhtf

[glados-verma]

Thanks for reporting and identifying the issue! I'm reopening so that we can make this example work out of the box.

[1am]

In the end it's actually quite easy, just add this to datas

('../.venv/src/openhtf/openhtf/output/web_gui','./openhtf/output/web_gui')

You obviously will need to adjust the "../.venv/src/openhtf/openhtf/output/web_gui" to appropriate path for your dev env setup.

[kzhuo333]

Adding more detail for those who have trouble following the above discussion.
I found two ways to do this for my setup.
In my workfolder, I want to create an executable from a file called "main.py" and I have a ".venv" virtual environment folder containing the "web_gui" subfolder.

Method 1 using VSCode terminal:

pyinstaller --onefile --add-data .venv/Lib/site-packages/openhtf/output/web_gui;./openhtf/output/web_gui main.py

Method 2 in the form of a python script:

import PyInstaller.__main__

PyInstaller.__main__.run([
        'main.py',
        '--onefile',
        '--add-data',
        '.venv/Lib/site-packages/openhtf/output/web_gui;./openhtf/output/web_gui'
    ])